MYTILINEOS : Invitation of the Shareholders to Extraordinary General Meeting

INVITATION of the Shareholders of the Société Anonyme

MYTILINEOS HOLDINGS S.A.

General Commercial Register (GEMI) No.: 757001000 to Extraordinary General Meeting

In accordance with the provisions of the law and the Company's Articles of Association, and following the resolution of the Board of Directors taken in its meeting of 15 November 2018, the Board of Directors invites the Shareholders of the Company to Extraordinary General

Meeting to be held at 11:00 hours of Tuesday 11 December 2018 in the Basement

Conference Hall of the Company branch's offices at 8 Artemidos Str., Maroussi, Attica. In

the event that the quorum required by law is not achieved, the Board of Directors hereby invites the Shareholders of the Company to a 1st Repeat General Meeting at 11:00 hours of Thursday 27 December 2018, and to a 2nd Repeat General Meeting at 11:00 hours of Monday 7 January 2019, both such Meetings to be held at the aforementioned venue.

AGENDA

1. Granting of special permission - approval by the shareholders' general assembly in

accordance with the provisions of article 23a §§2-3 of Codified Law 2190/1920 to conclude agreements for the lease and provision of housing services relating to offices belonging to related party as defined in §5 of the same article.

2.

Amendment of article 3 "Registered office" of the Company's articles of association to transfer the registered office of the Company from 5-7 Patroklou to 8 Artemidos str., in Municipality of Amaroussio, Attica Prefecture.

In accordance with article 26 § 2(b) and article 28(a) of Codified Law 2190/1920, as amended and supplemented by articles 3 and 6, respectively, of Law 3884/2010, as in force, the

Company informs the shareholders of the following:

Ι. Eligibility to participate in the General Meeting

Eligible to participate and vote in the General Meeting are only the private individuals or legal entities shown as shareholders of the Company in the Dematerialised Securities file kept electronically with the company "HELLENIC EXCHANGE HOLDING, CLEARING, SETTLEMENT & REGISTRATION S.A." (HELEX), at the start of the fifth (5th) day before the

date of the General Meeting, i.e. of 6 December 2018 (record date). Proof of shareholderstatus shall be established by direct electronic connection of the Company to the HELEX files. Shareholders who are legal entities must submit, within the deadline specified above, their legalisation documents as prescribed by law.

The 1st and 2nd Repeat Meetings, to be held on 27 December 2018 and 7 January 2019 respectively, may be attended by shareholders fulfilling the same as above formal requirements. Shareholder status must exist at the start of the fourth (4th) day before the date set for the 1st and the 2nd Repeat Meeting, i.e. of 23 December 2018 and 3 January 2018 respectively (record date for repeat general meetings). Proof of shareholder status for participation in these General Meetings shall again be established by direct electronic connection of the Company to the HELEX files. Shareholders who are legal entities must submit, within the deadlines specified above, their legalisation documents as prescribed by law.

In what concerns the Company, eligible to participate and vote in the General Meeting shall only be the persons having shareholder status as at the record date. Where a shareholder fails to comply with the provisions of article 28(a) of Codified Law 2190/1920, such shareholder may participate in the General Meeting only after being granted permission by it to do so.

Exercise of the said rights does not require the blocking of the shareholder's shares nor the

observance of any other procedure restricting the ability to sell and transfer such shares in the period of time between the record date and the date on which the General Meeting is to be held.

II. Procedure for exercising voting rights through proxies

Eligible shareholders may participate in the General Meeting either in person or through their lawfully authorised proxies. Each shareholder may appoint up to three (3) proxies.

Legal entities shall participate in the General meeting by appointing up to three (3) private individuals as their proxies. Shareholders may obtain the authorisation form for the appointment of proxy(ies) from the Company's website,www.mytilineos.gr,and in hard

copy from the Shareholders & Corporate Announcements Department of the Company (5-7 Patroklou Street, Maroussi, Attica, Tel. [phone]). Appointment and revocation of proxy(ies) shall be in writing and shall be communicated to the Company's offices at the address given above at least three (3) days before the date set for the General Meeting of the Shareholders, i.e. by 8 December 2018. The same deadline also applies for the 1st and the 2nd Repeat General Meeting, i.e. by 24 December 2018 and 4 January 2018 respectively.

The proxy of a shareholder is obliged to advise the Company before the General Meeting begins, of any event which may be useful to the shareholders in assessing the risk of that proxy serving interests other than those of the shareholder. A conflict of interests in connection with the above may arise in particular when the proxy: (a) is a shareholder exercising control over the Company or is another legal person or entity controlled by the said shareholder; or (b) is a member of the Board of Directors or of the Company's

Management in general or of a shareholder exercising control over the Company; or (c) is an employee or independent auditor of the Company or of a shareholder exercising control over the Company or another legal person or entity controlled by a shareholder exercising control over the Company; or (d) is the spouse or a relative in the first degree of one of the private individuals referred to in cases (a) to (c) above.

III. Minority rights

In accordance with article 39 §§ 2, 2(a), 4 and 5 of Codified Law 2190/1920, shareholders have, among others, the following rights:

i. Shareholders representing one twentieth (1/20) of the paid-up share have the right to request of its Board of Directors to enter additional items in the Agenda of the General

Meeting, following a request to this effect that must reach the Board of Directors at least fifteen (15) days prior to the General Meeting, i.e. by 26 November 2018. The request for the inclusion of additional items in the Agenda shall be accompanied by a justification or a draft resolution for adoption by the General Meeting, and the revised agenda shall be published in the same manner as the previous (original) one, thirteen (13) days prior to the date of the General Meeting, i.e. by 28 November 2018, and shall at the same time be made available to shareholders on the Company's website, together with the relevant justification

or draft resolution submitted by the minority shareholders as per the provisions article 27 § 3 of Codified Law 2190/1920.

ii. Following a request by shareholders representing one twentieth (1/20) of the paid-up share capital, the Board of Directors shall make available to the shareholders, as per the provisions of article 27 §3 of Codified Law 2190/1920, at least six (6) days prior to the date of the General Meeting, i.e. By 5 December 2018, draft resolutions on items included in the original or the revised agenda, provided that the relevant request reaches the Board of Directors at least seven (7) days prior to the date of the General Meeting, i.e. by 3 December 2018.

iii. At a request of any shareholder, submitted to the Company at least five (5) full days before the General Meeting, i.e. by 5 December 2018, the Board of Directors is obliged to provide to the General Meeting the requested specific information on the affairs of the

Company, insofar as such information is useful for the actual evaluation of the agenda items. The Board of Directors may provide a single response to inquiries of shareholders having the same content. The Board of Directors is under no obligation to provide information if such information is already available from the Company's website, specifically in the form

of questions and answers. The Board of Directors may refuse to provide the requested information for a sufficient and substantial reason that shall be entered in the minutes.

iv. At the request by shareholders representing one fifth (1/5) of the paid-up share capital, submitted to the Company at least five (5) full days prior to the General Meeting, i.e. by 5 December 2018, the Board of Directors is obliged to provide to the General Meeting information on the course of the Company's affairs and the status of its assets. The Board of Directors may refuse to provide the requested information for a sufficient and substantial reason that shall be entered in the minutes.

Corresponding deadlines for any exercise of minority rights are also applicable to repeat

General Meetings.

In order to exercise any of the above rights, applicant shareholders must supply proof of their shareholder status and of the number of shares held by them during the exercise of the relevant right. Production of a certificate to this effect issued by HELEX shall be admitted as such proof.

IV. Available documents and information

The information under 27 §3 of Codified Law 2190/1920 shall be made available in electronic form on the Company's website,www.mytilineos.gr.

The full text of the draft resolutions and of any documents provided for under article 27 §3 items (c) and (d) of Codified Law 2190/1920 shall be provided to shareholders in hard copy upon request, by the Shareholders & Corporate Announcements Department of the Company (5-7 Patroklou Street, Maroussi, Attica).

Maroussi, 15 November 2018

The Board of Directors MYTILINEOS HOLDINGS S.A.